摘要
采用微乳液快速共沉淀法制备了掺杂Co非晶态氢氧化镍超细粉体样品材料,对其晶态、结构形貌进行了表征分析,研究了材料合成条件对其充放电等性能的影响,讨论其相应的作用机理,并测定了合成掺杂材料的循环伏安特性.所制材料样品的氧化还原可逆循环性和稳定性好:样品电极在恒流100 mA/g下充电4 h,50 mA/g放电,终止电压为1.0 V时,放电电压稳定于1.240 V,放电比容量达317.75 mAh/g,电化学活性较高.
Co doped amorphous nickel hydroxide powder is prepared by the method of micro-emulsion. The phase structure of the sample is analyzed. Charge and discharge performances, cyclic volt-ampere characteristics of the aduherated electrodes are tested. The effect and corresponding mechanism of the charge and discharge performances of some factors are studied. Cyclic voltammeter characteristics of the adulterated electrodes are tested. The results show that the structure of the sample stability and reversibility are satisfactory. The discharge specific capacity can reach 317. 75 mAh/g when charged at 100 mA/g for 4 h and discharged at 50 mA/g to 1.0 V,with smooth discharge voltage at 1.240 V showing a high electrochemical activity.
出处
《桂林工学院学报》
北大核心
2007年第2期262-265,共4页
Journal of Guilin University of Technology
基金
国家自然科学基金资助项目(20563001)
广西区教育厅科研项目(桂教科研[2004]20)
